Benzoyl peroxide.

Widely available over the counter(OTC) bactericidal products containing benzoyl peroxide may be used in mild to moderate acne. Benzoyl peroxide is available in concentrations of 2.5%, 5% and 10%, either alone or with a combination of sulphur, hydroxyquinolone, glycolic acid or zinc lactate. The gel or cream containing benzoyl peroxide is applied , twice daily. Bar soaps or washes may also be used and vary from 2 to 10% in strength. In addition to its therapeutic effect as a antimicrobial benzoyl peroxide also has keratolytic(dissolve the excessive skin cells).This is also safe during pregnancy. Care must be taken when using benzoyl peroxide, as it can very easily bleach any fabric or hair when it comes in contact with. However, it routinely causes dryness, local irritation and redness. A sensible regimen may include the daily use of low-concentration (2.5%) benzoyl peroxide preparations. It can also cause pigmentation of skin, if exposed to the sunlight after rubbing on the skin.